They're not going to send these things in the mail.
Every one who signs up for this with no intention of ever walking into that store is just taking one away from someone who would actually get one, and get use from it.
It's funny how people around here will hop on anyhting just because it's free. A free GC that you're never going to claim is worth nothing.
Unless you're an altruist - in which case it has negative value, because you're taking away from someone else. Not to mention the nice mom-and-pop furniture shop that's just looking for some legitimate feedback on it's site.
Cheers,
-Dave